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A river, about 805 km (500 mi) long, of western New Guinea flowing northwest into the Pacific Ocean.
References in periodicals archive ?
It tells of the canyoning adventure of two men who journey through the forbidding jungle of New Guinea, to the Mamberamo river, and come into contact with isolated tribes.
beauforti (Weber, 1907; Lake Sentani and possibly Mamberamo River system), G.